Limit number of service instances passed to onServiceList listeners.

chrome/test/data/extensions/api_test/mdns/api/get_max_service_instances.js

Index: chrome/test/data/extensions/api_test/mdns/api/get_max_service_instances.js
diff --git a/chrome/test/data/extensions/api_test/mdns/api/get_max_service_instances.js b/chrome/test/data/extensions/api_test/mdns/api/get_max_service_instances.js
new file mode 100644
index 0000000000000000000000000000000000000000..82866a351a5849fa540614b1695b83683564bf98
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/mdns/api/get_max_service_instances.js
@@ -0,0 +1,12 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+onload = function() {
+  chrome.test.runTests([
+    function getMaxServiceInstancesPerEvent() {
+      chrome.test.assertEq(64, chrome.mdns.MAX_SERVICE_INSTANCES_PER_EVENT);

[mark a. foltz, 2015/04/03 23:26:40]

This is testing the value of a constant?  Is it really worth it?

[Red Daly, 2015/04/04 00:56:15]

Changed.  It's worth checking that chrome.mdns.MAX_SERVICE_INSTNACES_PER_EVENT
is defined, but the test doesn't need to check the value == 64.

+      chrome.test.notifyPass();
+    }
+  ]);
+};